红运玉兰绿地土壤增效保肥与生态功能恢复研究

王洁 顾燕飞 侍昊

摘要：采用小区试验，针对上海闵行文化公园2个不同建设进度下红运玉兰及其他绿地生态系统4～11月的土壤增效保肥与生态功能恢复情况进行了对比。结果表明，已建设完工并开园接近一年、以红运玉兰为主要植被的二期绿地土壤在全氮（TN）、全量有机碳（TOC）、速效磷（AP）、速效钾（AK）的存储量上显著高于其他植被覆盖的三期土壤，最终存储量（11月）分别达到1.13 g/kg（TN）、21.98 g/kg（TOC）、61.62 g/kg（AP）、136.45 g/kg（AK）；受降雨等客观环境因素影响，除三期土壤速效磷、速效钾、全量有机碳部分月份有降低趋势外，其他各期各项指标均逐月提升，大部分达到显著水平；根据土壤肥力指标分级系统加权计算可知，统一养护后的二期土壤，已经从极低肥力水平恢复至高肥力水平，而正在建设的三期土壤仍处在较低肥力水平；8个月的土壤碳通量原位监测显示，在5～10月份，二期在土壤生态功能恢复上显著高于三期，这可能是由于其更加完善的人工植被系统和更加活跃的土壤生物区系导致的。

关键词：土壤增效保肥； 生态功能；红运玉兰绿地；闵行文化公园

中图分类号：S158.3 文献标识码：A 文章编号：0439-8114（2015）14-3364-05

DOI：10.14088/j.cnki.issn0439-8114.2015.14.009

The Recovery of Soil Fertilization and Ecological Function in the

Green Space of Magnolia soulangeana cv. red

WANG Jie1，GU Yan-fei1，SHI Hao2

（1.Shanghai Gardening-landscaping Construction Co.Ltd.，Shanghai 200333，China；2. Jiangsu Environmental Monitoring，Nanjing 210036，China）

红运玉兰绿地土壤增效保肥与生态功能恢复研究

王 洁1，顾燕飞1，侍 昊2

（1.上海园林绿化建设有限公司，上海 200333；2.江苏省环境监测中心，南京 210036 ）

Abstract： The plot test had been introduced to monitoring the fertility changes and ecological functional recovery of two different construction schedule of Magnolia soulangeana cv.red and other green space ecosystem from April to November in Minhang cultural park， Shanghai. The results showed that， compared to the soil of the third stage， the final concentration （TN，TOC，AP，AK in November） in Second stage which had been end of construction and open for a year was improved significantly，the accumulation was 1.13，21.98，61.62，136.45 g/kg，respectively； affected by rainfall and the other objective factors， some fertility index （AP， AK， TOC） was falling in the third stage but the majority of them were improving significantly month by month； according to the classification indexes about soil fertility， it revealed that the soil fertility of the Second stage had been shift to high-fertility level from very poor level. The soil fertility of the third stage was stay on the poor phase. In-situ monitoring about Carbon flux（April to November） suggested that the degree of recovery about ecological functional in the second stage was increased significantly than the third stage between May to October， the more completed artificial vegetation and the active microflora lead to the above results， possibly.

Key words： soil fertilization； ecological function； green space of Magnolia soulangeana cv. red； Minhang cultural park

区域城镇化进展，往往伴随着过量的生产资源开发，因此导致各类严重的城市生态问题，土壤资源作为重要的城镇化发展生产要素，往往第一时间便遭到侵蚀和破坏[1]。道路、桥梁、地产等交通生活资料的更新更容易导致周边土壤肥力下降、结构破坏、从而使土壤失去在整个生态系统中重要的调节作用[2，3]。……